<select id="customer" name="customer" onchange="javascript:viewBillDeliv(
                                                        '#customer', '#content_deliv', '#content_bill', '0')">
                                <option value="" selected="selected">::: Select :::</option>
                                <?php foreach ($customer2 as $customer3){?>
                                    <option value="<?php echo $customer3['customer_id'];?>"><?php echo $customer3['customer_name'];?></option>
                                <?php }?>
                        	</select>